Apparently, it sounds different to different people.
Chicken onomatopoeia
This chicken can speak languages from many different countries.
... Actually, no. The chicken’s clucking never changes.
We, the listeners, simply substitute the onomatopoeia of our own country.
We come from different cultures and histories, so there are likely other similar discrepancies. If you keep this in mind when interacting with the people around you, you may make some new discoveries.